Blueberry pestsappear from the very beginning of the growing season, causing deformation of leaves or damage to flower buds. They weaken the growth and development of the shrub, while reducing the quantity and quality of blueberry crops. See how to identifyblueberry pest symptomsand learn the best ways toblueberry pest control !
Blueberry pests weaken the growth and fertility of the shrub
Blueberry pests deforming the leaf blade
Blueberry Pryszczarek
The blueberry midge is a pest that often attacks blueberry bushes.The midge feeding symptomsare damaged leaves, which are characteristically curled, twisted, deformed. American blueberry shoots grow stunted, growth tips die and the shoots are excessively branched. As a result of feeding the blueberry midge we observe growth inhibition and weakening of fruiting.
The larvae of this blueberry pesthibernate in the soil under shrubs. Flies appear in spring, females lay their eggs on the upper side of a curled leaf. During the growing season, two or even more generations of the pest develop.
In the fight against the blueberry midge , use Acetamip 20 SP or Mospilan 20 SP, performing the treatment after noticing the first damage on the leaves from the end of the flowering phase to the end of the fruit ripening phase.
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Symptoms of feeding on a turtle dovecan be observed in May and early June, when singleblueberry leaves are curled along the nerveor loosely coupled leaf rosettes at the tops are visible shoots.
On the other hand,the caterpillars of the spotted tanglegraft 3, 4 young leaves or several tops with yarn and feed inside such a hiding place. Caterpillars caterpillars can additionally damage young fruit buds.
These blueberry pestsweaken the growth of the bush and reduce the quantity and quality of the crop. When pest feeding is observed, spray with natural Spintor 240 SC or the previously mentioned chemical agents Acetamip 20 SP or Mospilan 20 SP.
Strawberry opuchlak
In the spring, the larvae of the Morbid Edulis feed on the roots of plants, eating the small roots and gnawing the bark of the older ones.From June to autumn, characteristic erupted bends are visible on the edges of the leaf blade,feeding symptoms of this blueberry pest , which can additionally gnaw the bark around the bottom of the shoots.
As a result offeeding of the Morbid Morbid , the growth of blueberry bushes is weakened, sometimes shoot dieback with damaged bark occurs, and the yield is lower and of poor quality. Whenof blueberry feeding symptoms are observed , spray with Acetamip 20 SP or Mospilan 20 SP.
Aphids on the American blueberry
The speciesof aphids that attack the American blueberryinclude beetroot aphid and peach aphid.
In colonies, aphids feed on the tips of shoots and apical leaves, sucking up plant sap and causing deformation of the controlled parts of the plant.Symptoms of aphids feeding on blueberriesinclude: stunted shoot growth and weakened fruiting.
The eggs of the beetroot aphid winter on euonymus. After hatching, the pests feed on the shrub for 2-4 generations. After this time, from the second generation, there arewinged individuals that fly over to the blueberryIn turn, the wintering eggs of the peach aphid hatch larvae in spring, and females grow from them. The development of one generation usually takes a dozen or so days, and blueberries may develop from 2 to 4 generations of this aphid.
To combat aphids on blueberriesit is worth using natural preparations, such as garlic-scented potassium soap or Agrocover. Among the chemicals, the same preparations as for the control of other blueberry pests will be useful for controlling aphids, i.e. Acetamip 20 SP and Mospilan 20 SP.
Blueberry pests damaging flower buds
Preposimic acid
The symptoms of feeding on the early spring, when the caterpillars feed on leaves and flowers, eat up their tissue, occurring in large numbers, and may cause pig-eating.Caterpillars also destroy the pistils and stamens in the buds and flowers, as a result of which they damage the fruit buds. The American blueberry bush is weakened, so we harvest much smaller yield from it.Fighting this blueberry pestconsists in manually collecting caterpillars and destroying them. The tracks can also be sprayed with Spintor 240 SC or Mospilan 20 SP.
Blueberry bud spel
Blueberry bud spel sucksjuices from cells, leaving the plant devoid of assimilations. This pest of blueberries, when feeding on flower buds, flowers and fruit buds, causes the fruit to be poorly developed, to partially develop, and its skin to become rough. Blueberry bud spel also causes weak blueberry growth, and fruit buds may drop. Thishighbush blueberry pest usually does not cause much damageand is not controlled by spraying in home gardens and allotments.
Rice thrips Female rice thrips hibernate under bushes, in May they fly over the American blueberry and lay eggs. Adult thrips feed on flowers and on the youngest leaves, smoothing the plants.As a result of feeding this blueberry pest, we observeinhibition of shoot growth, reduction of fruit setting and their deformation. Thrips control is carried out with plant protection products such as Mospilan 20 SP or Karate Zeon 050 CS.
MSc Eng. Joanna Białowąs
